Abnormal retention of X-irradiated ataxia-telangiectasia fibroblasts in G2 phase of the cell cycle: cellular RNA content, chromatin stability and the effects of 3-aminobenzamide.
Abnormal retention of X-irradiated ataxia-telangiectasia fibroblasts in G2 phase of the cell cycle: cellular RNA content, chromatin stability and the effects of 3-aminobenzamide.
复制标题
X 射线照射的共济失调毛细血管扩张成纤维细胞在细胞周期 G2 期的异常保留:细胞 RNA 含量、染色质稳定性和 3-氨基苯甲酰胺的作用。
DOI:
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发表时间:
1985
期刊:
影响因子:
--
通讯作者:
J. Watson
中科院分区:
文献类型:
--
作者:
P. Smith;C. Anderson;J. Watson
We have addressed three aspects of the abnormal sensitivity of SV40 transformed ataxia-telangiectasia (A-T) fibroblasts to X-irradiation, namely: (a) the radiogenic perturbations in cell-cycle traverse analysed by flow cytometry; (b) the involvement of 3-aminobenzamide-sensitive processes in cellular recovery in terms of viability and release from G2 + M phase delay; and (c) the functional and structural integrity of cells delayed in G2 + M phase using acridine orange as a probe for cellular RNA content and chromatin structure. We report that A-T cells show a dose-dependent and survival-related abnormal retention in G2 + M phase due to the lack of a recovery process, despite the capacity of such cells to synthesize ribosomal RNA and maintain the structural integrity of chromatin. Evidence is presented that the recovery process is dependent upon poly(ADP ribosyl)ation activity in both normal and A-T cells except that in the latter cell type recovery potential is rapidly saturated in terms of X-ray dose.
影响因子:
3.7
作者:
DARZYNKIEWICZ, Z;TRAGANOS, F;MELAMED, MR
通讯作者:
MELAMED, MR
DOI:
10.1016/0167-4781(83)90039-8
发表时间:
1983
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Smith,PJ;Paterson,MC
通讯作者:
Paterson,MC